//
//  AppDelegate.m
//  07-UITabBarController
//
//  Created by dllo on 16/7/22.
//  Copyright © 2016年 dllo. All rights reserved.
//

#import "AppDelegate.h"
#import "ViewController.h"
#import "FirstViewController.h"
#import "SecondViewController.h"
#import "ThirdViewController.h"
@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    _window.backgroundColor = [UIColor whiteColor];
    [_window makeKeyAndVisible];
    FirstViewController *firstVC = [[FirstViewController alloc] init];
    firstVC.title = @"one";
    SecondViewController *secondVC = [[SecondViewController alloc] init];
    secondVC.navigationItem.title = @"two";
    ThirdViewController *thirdVC = [[ThirdViewController alloc] init];
    thirdVC.navigationItem.title = @"third";

    UITabBarController *tabBar = [[UITabBarController alloc] init];
    UINavigationController *navgationOne = [[UINavigationController alloc] initWithRootViewController:firstVC];
    firstVC.navigationItem.title = @"l";
    UINavigationController *navgationTwo = [[UINavigationController alloc] initWithRootViewController:secondVC];
    UINavigationController *navgationThree = [[UINavigationController alloc] initWithRootViewController:thirdVC];
    tabBar.viewControllers = @[navgationOne, navgationTwo, navgationThree];
    
    _window.rootViewController = tabBar;
  

#pragma mark - UITabBarController
#if 0
    {
    // UITabBarController 标签视图控制
    // 主要管理没层级关系的视图控制器
    ViewController *vc = [[ViewController alloc] init];
    UITabBarController *tabbar = [[UITabBarController alloc] init];
    UINavigationController *navagation = [[UINavigationController alloc] initWithRootViewController:vc];
    // 设置tabBarItem时, 给你要放进数组中的控制器去设置 *** 此时为navagation
    navagation.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"新闻" image:nil tag:0];
    // 设置标题
    vc.navigationItem.title = @"News";
    [tabbar setViewControllers:@[navagation]];
    _window.rootViewController = tabbar;
    // 1 viewControllers 所有被管理的视图控制器, 都在这个数组中
    // 2 可以通过setter方法赋值
    // 也可以通过 setViewControllers:animated 进行视图控制器数组的赋值
    // 3 通过一个数组创建完成后, 如果数组中的控制器没有设置tabBarItem, 则显示一个空的tabBarItem
    // 4 tabBarItem 根据自己需求去创建对应的tabBarItem
    //   UIViewController的属性(Category)
    // 因为: 每个视图控制器的tabBarItem都不一样, 因此不能设为UITabBarController的属性
    // tabBarItem创建方式
    // 1) -> initWithTabBarSystemItem:  根据系统样式创建
    // 2) -> initWithTitle: image: tag: 根据自定义的文字与图片创建
    // 3) -> initWithTitle: image: selectedImage: tag: 根据自定义的图片与文字创建, 增加选中图片
    // 5 如果数组个数过多(大于5), 系统会把多出来的内容, 统一使用一种方式去管理(不建议多于5个)
    // 6 tabbar (高度49)
    // -> barTintColor bar背景色
    tabbar.tabBar.barTintColor = [UIColor redColor];
    // tintColor bar上元素颜色
    tabbar.tabBar.tintColor = [UIColor yellowColor];
    // -> 半透明效果
    tabbar.tabBar.translucent = NO;
    // badgeValue 角标
    navagation.tabBarItem.badgeValue = @"99+";
    // 7 UIAppearance 全局设置
    [[UITabBar appearance] setTintColor:[UIColor yellowColor]];
    [[UITabBar appearance] setBarTintColor:[UIColor lightGrayColor]];
    [[UINavigationBar appearance] setBarTintColor:[UIColor blackColor]];
    // 修改系统标题颜色
    [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor]}];
    // VC中 self.title 与 self.navigationItem.title有区别
    // 1 self.title 会修改两个内容 navagationItem.title 和 tabBarItem.title
    // 2 self.navigationItem.title 只修改导航上的标题
    }
#endif
    

    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end
